Dong-Hyeon Ko

ORCID: 0000-0001-6791-3283
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Innovative Microfluidic and Catalytic Techniques Innovation
  • Microfluidic and Capillary Electrophoresis Applications
  • 3D Printing in Biomedical Research
  • Ultrasound and Cavitation Phenomena
  • Nanoplatforms for cancer theranostics
  • Engineering and Test Systems
  • Military Defense Systems Analysis
  • CO2 Reduction Techniques and Catalysts
  • Nanofabrication and Lithography Techniques
  • Membrane Separation Technologies
  • Carbon dioxide utilization in catalysis
  • Fuel Cells and Related Materials
  • Electrowetting and Microfluidic Technologies
  • Solar-Powered Water Purification Methods
  • 2D Materials and Applications
  • Advanced Measurement and Detection Methods
  • Surface Modification and Superhydrophobicity
  • Chemical Synthesis and Analysis
  • Covalent Organic Framework Applications
  • Gold and Silver Nanoparticles Synthesis and Applications

Pohang University of Science and Technology
2014-2020

Abstract Simultaneous capture of carbon dioxide (CO 2 ) and its utilization with subsequent work-up would significantly enhance the competitiveness CO -based sustainable chemistry over petroleum-based chemistry. Here we report an interfacial catalytic reaction platform for integrated autonomous process simultaneously capturing/fixing in gas–liquid laminar flow subsequently providing a step. The continuous-flow microreactor has built-in silicon nanowires (SiNWs) immobilized ionic liquid...

10.1038/ncomms14676 article EN cc-by Nature Communications 2017-03-06

Abstract The past three decades have seen increasing progress in the integration and process diversification of microfluidic systems for use chemistry, biochemistry, analysis. Here we summarize recent achievements microreaction modules microseparation units. We look into developments fabricated by various 3D printing techniques chemical synthetic applications. Moreover, take a at newly developed technologies with enhanced separation efficiency realized adopting single or hybrid principles as...

10.1556/1846.2017.00013 article EN cc-by Journal of Flow Chemistry 2017-07-01

Exploration and expansion of the chemistries involving toxic or carcinogenic reagents are severely limited by health hazards their presence poses. Here, we present a micro-total envelope system (μ-TES) an automated total process for generation reagent, its purification utilization desired synthesis that is totally enveloped from being exposed to carcinogen. A unique microseparator developed on basis SiNWs structure replace usual exposure-prone distillation in separating generated reagent....

10.1038/ncomms10741 article EN cc-by Nature Communications 2016-02-26

Gas and liquid streams are invariably separated either by a solid wall or membrane for heat mass transfer between the gas streams. Without separating wall, phase is present as bubbles in or, microsystem, plugs slugs of liquid. Continuous direct contact two moving quite an efficient way achieving phases. Here, we report silicon nanowire built-in microsystem which stream flows with underlying stream. The upper does not penetrate into lower due to superamphiphobic nature nanowires built bottom...

10.1021/acsnano.5b06454 article EN ACS Nano 2016-01-07

A photocurable and viscous fluoropolymer with chemical stability is a highly desirable material for fabrication of microchemical devices.

10.1039/c4lc00748d article EN Lab on a Chip 2014-01-01

The strategic separation between the fragmentation and delamination under controlled cavitation effect leads to rapid production of few-layer enriched BP flakes with high uniformity in an aqueous medium.

10.1039/c9gc02337b article EN Green Chemistry 2019-11-22

In the past decade, 3D-printing technology has been applied in field of microfluidics to fabricate microfluidic devices for wide-ranging areas study including chemistry, biology, medicine, and others. However, these methods face several limitations such as insufficient resolution long fabrication time. this study, versatile with different functions were indirectly fabricated by a rapid sacrificial template printing process using photocurable fluoropolymer chemical durability. The Pluronic®...

10.1039/c8ra08465c article EN cc-by-nc RSC Advances 2018-01-01

A 3D nanoweb-like zeolite imidazole framework (ZIF-8) as an efficient heterogeneous catalyst was structured inside a microfluidic channel for Knoevenagel condensation reaction by growing the ZIF on carbon nanotube (CNT) networks bridging built-in micropillars.

10.1039/d0re00004c article EN Reaction Chemistry & Engineering 2020-01-01

본 연구는 소구경 화기의 분산도 향상을 위한 목적으로 수행 되었다. 화기는 개인 보병이 휴대하는 화기로서, 세계적 표준으로 정해진 바는 없지만 대한민국에서는 통상 20mm 이하의 구경을 가진 화기를 말한다. 분산도란 목표 지점에서 탄이 얼마나 분산되어 탄착점을 형성 하는가에 대한 것으로, 실제 전투에서 적군에 명중률과 직결되는 가장 중요한 제원 중 하나이다. 분산도에는 다양한 인자들이 영향을 주는데, 이번 연구에서는 사격시 총기의 진동이나 충격에 의해 발생되는 편차를 최소화 하는 방안에 대해 고찰하였다. 그 방법으로는 총열 조립체의 유격을 시키고 총열의 두께를 증대시켜 사격 진동 및 충격의 방안을 고안하였다. 결과 조립 유격과 두께가 정량적으로 향상에 어떻게 기여하는지 알 수 있었다. 연구 총열두께와 유격 조정만으로 최대 64%의 향상 효과를 확인 할 연구를 통해 두께의 분산도에 정량적인 영향도를 파악하여 타 화력 무기에 확대 적용할 있을 것으로 기대한다.

10.5762/kais.2023.24.10.286 article KO Journal of the Korea Academia-Industrial cooperation Society 2023-10-31
Coming Soon ...